Weinmann MEDUMAT Easy Descripción Del Aparato E Instrucciones página 38

Real Demandflow time
Example:
Inhalation flow 45 l/min
Patient data:
Inspiration : Expiration (I : E) = 1 : 2
Respiratory frequency = 10 min
Breathing volume (BV) = inhalation flow x inhalation time
For the above example:
Breathing volume = 45 l/min x 0.033 min= 1,5 l
Minute volume (MV) = respiratory frequency x BV
For the above example:
Minute volume (MV) = 10 min-1 x 1.5 l = 15 l/min
Real Demandflow time (min) =
Example:
O content = 2000 l, MV = 15 l/min.
2
This gives the following equation:
Real Demandflow time =
38
EN
Using the ventilator
Max. flow
BV = 1,5 l
-1
:
= 0.033 min
oxygen content (l)
2000 l
15 l/min
I = 2 sec E = 4 sec
= 0.066 min
MV (l/min)
= 133 min = 2 h 13 min
BV = 1,5 l
I = 2 sec t
= 0.033 min